Sikorsky S-76

Details

Country of Origin

United States of America

Type

Mid size utility helicopter

History

Sikorsky's S76 is a popular mid size corporate and oil rig support helicopter.
Sikorsky began development work on the S76 (for a time named Spirit) in the mid 1970s and used technologies and experience gained from the military S70 Black Hawk program. The resulting S-76A was powered by two Allison 250C30S turboshafts and could seat 12. First flight was on March 13 1977 and FAA certification was awarded in November 1978.
The first improved model was the S76 Mark II (introduced in March 1982) with more powerful Allison engines and 40 detail refinements. The S76B is powered by two Pratt & Whitney Canada PT6B36s (the 101st and last B was due to be delivered in December 1998), while the S76C is powered by two Turboméca Arriel 1S1 engines. The S76A+ designation covers undelivered S76As subsequently fitted and delivered with Arriel engines, and S76As converted to Arriel power.
Current production is of the S76C+ with 18% more powerful FADEC equipped Arriel 2S1 engines. Certification of the C+ was awarded in mid 1996. Forthcoming improvements include composite blades, a quiet tail rotor with curved blades, an active noise and vibration control system, and an advanced health and usage monitoring system. A three LCD screen integrated instrument display system (IIDS) for engine and rotor information is now standard, supplementing the four screen Honeywell EFIS suite.

Flightcrew of two. Max seating for 12 or 13 passengers at 79cm (31in) pitch in oil rig support aircraft. VIP configurations offered in six or eight passenger seat form. EMS configured aircraft accommodate one or two stretchers and four medical attendants.

Production

Total S76 production in late 1998 of approximately 480, comprising 284 S76As, 101 S76Bs, 17 S76A+, 43 S76Cs and 35 S-76C+s. Over 70 S76As converted to S76A+ standard.

Related Links

Sikorsky S-76

The backbone of this section is from the The
International Directory of Civil Aircraft by Gerard Frawley
and used with permission. To get your own copy of the book
click here.